plugins.js not build

gulpfile.js

// generated on 2015-06-14 using generator-gulp-webapp 1.0.0
import gulp from 'gulp';
import gulpLoadPlugins from 'gulp-load-plugins';
import browserSync from 'browser-sync';
import del from 'del';
import {stream as wiredep} from 'wiredep';

const $ = gulpLoadPlugins();
const reload = browserSync.reload;

gulp.task('styles', () => {
  return gulp.src('app/styles/*.scss')
    .pipe($.plumber())
    .pipe($.sourcemaps.init())
    .pipe($.sass.sync({
      outputStyle: 'expanded',
      precision: 10,
      includePaths: ['.']
    }).on('error', $.sass.logError))
    .pipe($.autoprefixer({browsers: ['last 1 version']}))
    .pipe($.sourcemaps.write())
    .pipe(gulp.dest('.tmp/styles'))
    .pipe(reload({stream: true}));
});

function lint(files) {
  return () => {
    return gulp.src(files)
      .pipe(reload({stream: true, once: true}))
      .pipe($.eslint())
      .pipe($.eslint.format())
      .pipe($.if(!browserSync.active, $.eslint.failAfterError()));
  };
}

gulp.task('lint', lint('app/scripts/**/*.js'));
gulp.task('lint:test', lint('test/spec/**/*.js'));

gulp.task('html', ['styles'], () => {
  const assets = $.useref.assets({searchPath: ['.tmp', 'app', '.']});

  return gulp.src('app/*.html')
    .pipe(assets)
    .pipe($.if('*.js', $.uglify()))
    .pipe($.if('*.css', $.minifyCss({compatibility: '*'})))
    .pipe(assets.restore())
    .pipe($.useref())
    .pipe($.if('*.html', $.minifyHtml({conditionals: true, loose: true})))
    .pipe(gulp.dest('dist'));
});

gulp.task('images', () => {
  return gulp.src('app/images/**/*')
    .pipe($.if($.if.isFile, $.cache($.imagemin({
      progressive: true,
      interlaced: true,
      // don't remove IDs from SVGs, they are often used
      // as hooks for embedding and styling
      svgoPlugins: [{cleanupIDs: false}]
    }))
    .on('error', function (err) {
      console.log(err);
      this.end();
    })))
    .pipe(gulp.dest('dist/images'));
});

gulp.task('fonts', () => {
  return gulp.src(require('main-bower-files')({
    filter: '**/*.{eot,svg,ttf,woff,woff2}'
  }).concat('app/fonts/**/*'))
    .pipe(gulp.dest('.tmp/fonts'))
    .pipe(gulp.dest('dist/fonts'));
});

gulp.task('extras', () => {
  return gulp.src([
    'app/*.*',
    '!app/*.html'
  ], {
    dot: true
  }).pipe(gulp.dest('dist'));
});

gulp.task('clean', del.bind(null, ['.tmp', 'dist']));

gulp.task('serve', ['styles', 'fonts'], () => {
  browserSync({
    notify: false,
    port: 9000,
    server: {
      baseDir: ['.tmp', 'app'],
      routes: {
        '/bower_components': 'bower_components'
      }
    }
  });

  gulp.watch([
    'app/*.html',
    'app/scripts/**/*.js',
    'app/images/**/*',
    '.tmp/fonts/**/*'
  ])
  .on('change', reload)

  gulp.watch([
    'app/*.html',
    'app/scripts/**/*.js',
    'app/images/**/*',
    '.tmp/fonts/**/*'
  ],['lint']);

  //.on('change', 'lint');

  gulp.watch('app/styles/**/*.scss', ['styles']);
  gulp.watch('app/fonts/**/*', ['fonts']);
  gulp.watch('bower.json', ['wiredep', 'fonts']);
});

gulp.task('serve:dist', () => {
  browserSync({
    notify: false,
    port: 9000,
    server: {
      baseDir: ['dist']
    }
  });
});

gulp.task('serve:test', () => {
  browserSync({
    notify: false,
    open: false,
    port: 9000,
    ui: false,
    server: {
      baseDir: 'test'
    }
  });

  gulp.watch('test/spec/**/*.js').on('change', reload);
  gulp.watch('test/spec/**/*.js', ['lint:test']);
});

// inject bower components
gulp.task('wiredep', () => {
  gulp.src('app/styles/*.scss')
    .pipe(wiredep({
      ignorePath: /^(\.\.\/)+/
    }))
    .pipe(gulp.dest('app/styles'));

  gulp.src('app/*.html')
    .pipe(wiredep({
      exclude: ['bootstrap-sass'],
      ignorePath: /^(\.\.\/)*\.\./
    }))
    .pipe(gulp.dest('app'));
});

gulp.task('build', ['lint', 'html', 'images', 'fonts', 'extras'], () => {
// gulp.task('build', ['html', 'images', 'fonts', 'extras'], () => {
  return gulp.src('dist/**/*').pipe($.size({title: 'build', gzip: true}));
});

gulp.task('default', ['clean'], () => {
  gulp.start('build');
});


var ghPages = require('gulp-gh-pages');
 
gulp.task('deploy', function() {
  return gulp.src('./dist/**/*')
    .pipe(ghPages());
});

index.html

<!doctype html>
<html class="no-js" lang="">
  <head>
    <meta charset="utf-8">
    <meta name="description" content="">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>pixel counter</title>

    <link rel="apple-touch-icon" href="apple-touch-icon.png">
    <!-- Place favicon.ico in the root directory -->

    <!-- build:css styles/vendor.css -->
    <!-- bower:css -->
    <!-- endbower -->
    <!-- endbuild -->

    <!-- build:css styles/main.css -->
    <link rel="stylesheet" href="styles/main.css">
    <!-- endbuild -->
    
    <!-- build:js scripts/vendor/modernizr.js -->
    <script src="/bower_components/modernizr/modernizr.js"></script>
    <!-- endbuild -->

    <!-- build:js scripts/main.js -->
    <script src="scripts/main.js"></script>
    <!-- endbuild -->
  </head>
  <body>
    <!--[if lt IE 10]>
      <p class="browserupgrade">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
    <![endif]-->
    
    <div class="container" style="background:#CCC">
      <div class="header">
<!--         <ul class="nav nav-pills pull-right">
          <li class="active"><a href="#">Home</a></li>
          <li><a href="#">About</a></li>
          <li><a href="#">Contact</a></li>
        </ul> -->
        <h3 class="text-muted">pixel counter</h3>
      </div>

<!--       <div class="jumbotron">
        <h1>'Allo, 'Allo!</h1>
        <p class="lead">Always a pleasure scaffolding your apps.</p>
        <p><a class="btn btn-lg btn-success" href="#">Splendid!</a></p>
      </div> -->

      <div class="row marketing">
        <div class="col-lg-12">
          <form id="import-form">
            <div class="text">Click to slect file or drag file into here</div>
            <input type="file" id="import-file" />
          </form>
          <h1>Imported</h1>
          
          <div id="">
            <img id="import-image" src="jobs.png"/>
          <!-- <img id="scream" src="images/steve-jobs.png"/> -->
          </div>
          <!-- <img id="scream" src="cube.png"/> -->
          <h1>Preview</h1>
          <!-- <canvas id="myCanvas" style="width:310px"></canvas> -->
          <canvas id="myCanvas" style="display: none;"></canvas>

          <div id="contribution"></div>

          <div id="output"></div>
          
        </div>
      </div>

      <div class="footer">
        <p>♥ from the Yeoman team</p>
      </div>
    </div>
    

    <!-- build:js scripts/plugins.js -->
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/affix.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/alert.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/dropdown.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/tooltip.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/modal.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/transition.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/button.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/popover.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/carousel.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/scrollspy.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/collapse.js"></script>
    <script type="/bower_components/bootstrap-sass/assets/javascripts/bootstrap/tab.js"></script>
    <!-- endbuild -->

    <!-- build:js scripts/vendor.js -->
    <!-- bower:js -->
    <script src="/bower_components/jquery/dist/jquery.js"></script>
    <script src="/bower_components/moment/moment.js"></script>
    <!-- endbower -->
    <!-- endbuild -->
  </body>
</html>